[bug #30515] Grep now seems to interpret \s in the regex as whitespace

[Gene Hightower]

URL:
  <http://savannah.gnu.org/bugs/?30515>

                 Summary: Grep now seems to interpret \s in the regex as
whitespace
                 Project: grep
            Submitted by: Digilicious
            Submitted on: Wed 21 Jul 2010 05:05:40 PM PDT
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

Grep now seems to interpret \s in the regex as whitespace.  This is
not how grep used to work, nor is it how grep is documented to work.

Old grep works fine:

$ grep --version
grep (GNU grep) 2.5.1

Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ echo s | grep -c '^\s$'
1
$ echo " " | grep -c '^\s$'
0

New grep is broken:

$ grep --version
GNU grep 2.6.3

Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

$ echo s | grep -c '^\s$'
0
$ echo " " | grep -c '^\s$'
1





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